Description
The Johnson Controls P70NA-1 is a heavy-duty single-pole dual pressure control engineered for reliable refrigeration and HVAC system protection. Featuring SPST (Single-Pole, Single-Throw) switching, this control monitors both low-side and high-side pressures simultaneously, providing comprehensive system safeguarding in a single device.
Dual Pressure Monitoring
The P70NA-1 covers a wide range of operating pressures to suit demanding commercial and industrial refrigeration applications:
- Low Pressure Range: 20″ WC to 100 PSI
- High Pressure Range: 100 PSI to 500 PSI
Manual Reset Lockout Protection
Both the low-pressure and high-pressure circuits are equipped with lockout protection that requires manual reset. This safety feature prevents automatic restart after a fault condition, ensuring a technician inspects and clears the issue before the system resumes operation — protecting compressors and refrigeration equipment from repeated damage.
- Low Pressure Differential: Lockout — requires manual reset
- High Pressure Differential: Lockout — requires manual reset
Key Features
- SPST switching configuration for straightforward wiring integration
- Single-pole dual pressure design — monitors both high and low side simultaneously
- Low pressure range: 20″ WC to 100 PSI with manual reset lockout
- High pressure range: 100 PSI to 500 PSI with manual reset lockout
- 36″ capillary tube for flexible installation and remote sensing
- Designed for commercial refrigeration and HVAC compressor protection
- Durable construction for long-term reliability in demanding environments
Applications
The P70NA-1 is ideal for use in commercial refrigeration systems, air conditioning equipment, and industrial HVAC applications where dual-pressure monitoring and compressor lockout protection are required. The 36″ capillary tube allows for versatile mounting options away from the pressure sensing point.
Product Specifications
- Brand: Johnson Controls
- SKU / Part Number: P70NA-1
- Switching Type: SPST (Single-Pole, Single-Throw)
- Control Type: Single Pole Dual Pressure
- Low Pressure Range: 20″ WC to 100 PSI
- Low Pressure Differential: Lockout (Manual Reset)
- High Pressure Range: 100 PSI to 500 PSI
- High Pressure Differential: Lockout (Manual Reset)
- Capillary Tube Length: 36″
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